var obj = {
  name: "ziheng",
  eating: function () {
    console.log(this.name, "在吃东西");
  },
  running: function () {
    console.log(this.name, "在跑步");
  },
  studying: () => {
    console.log(this.name, "在学习");
  },
};
obj.eating();
